Filter assembly



FIG. 1 is a front, upper, right side view of the filter assembly;

FIG. 2 is a rear, lower, left side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a perspective view of the filter assembly shown in an open position.

The broken lines shown in FIGS. 1-6, 8 and 9 illustrate portions of the filter assembly that form no part of the claimed design. 

CLAIM The ornamental design for a filter assembly, as shown and described. 